Have trouble sleeping on an airplane? There may be an app for that. AIRSLEEP is an iOS app that combines nature sounds, ambient music and “slow wave” audio to hypnotize you into sleep. The combination is supposed to cancel out cabin noise and match your brain’s low-level “delta waves” as you fall asleep. The app itself is free and comes with some basic sounds including rain, beach waves and desert wind, but you pay to expand your “sleep library” with additional sounds such as “monk chant,” holiday sleep sounds (think snow falling and the crackling of a fireplace) and a “control freak” customizable program.

Does it work? There are only a few reviews on iTunes so far, and they are a mixed bag.

The “slow waves” seem to create a good bit of reverse feedback in addition to the ambient sounds to cover up background noise, and the sounds are definitely soothing. When you open the program, you agree to a standard disclaimer that you will not use while operating heavy machinery and such, but also not under the influence of alcohol, which many of us use to help sleep. If you are someone who has used a sleep sound machine with success at home, this might be the app for you. If the wind chimes make you feel like you’re locked in a candle shop, you might be better off with noise-canceling headphones.